<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <div class="f1 f2 f3 f4">
        <p class="f1"></p>

    </div>
    <div class="f1 f2"></div>
    <div class="f2 f4"></div>
    <div class="f2 f6"></div>
    <div class="f1 f0"></div>
    <div class="ff fo"></div>
    <div class="fofo"></div>
    <div class="ttt f3 fofo"></div>
    <p class="f1"></p>

    <script src="./js/index.js"></script>
</body>
</html>